Abstract: An overcurrent protective wire wound resistor has a core, a second contact cap and a resistance wire. A first contact cap and a resistor connection seat are respectively mounted on two ends of a rod of the core. A low melting-point conductive layer is mounted around the rod and connected with the first contact cap and the resistor connection seat. A high-temperature contractive insulation layer is mounted around the low melting-point conductive layer and the first contact cap. The second contact cap is mounted around the contractive insulation layer. The resistance wire is connected to the resistor connection seat and the second contact cap. When current through the resistance wire abnormally increases, high temperature of the resistance wire melts the low melting point conductive layer to shrink the contractive insulation layer and open the low melting-point conductive layer and the resistor, thereby protecting the circuit connected to the resistor.

Abstract: A resistor having a body, a fuse component, a resistor component, a wire and a cover. The body has a top, a first positioning hole and a second positioning hole being formed in the top of the body. The fuse component is inserted in the first positioning hole. The resistor component is inserted in the second positioning hole. The wire connects the fuse component and the resistor component and is mounted outside the body. The cover is attached to the top of the body around the wire. Therefore, the body of resistor as described may be dried in an oven without damaging the resistor component. A method having steps of forming a body having two positioning holes, drying the body in an oven heated above 130° C., mounting a resistor component and a fuse component respectively in the positioning holes, and covering the positioning holes with an insulating cover.